4-Chloro-5-ethoxy-2-phenyl-3(2H)-pyridazinone

Modify Date: 2026-06-30 10:00:01

4-Chloro-5-ethoxy-2-phenyl-3(2H)-pyridazinone Structure
4-Chloro-5-ethoxy-2-phenyl-3(2H)-pyridazinone structure
Common Name 4-Chloro-5-ethoxy-2-phenyl-3(2H)-pyridazinone
CAS Number 5509-73-9 Molecular Weight 250.68100
Density 1.22g/cm3 Boiling Point 378.6ºC at 760 mmHg
Molecular Formula C12H11ClN2O2 Melting Point N/A
MSDS N/A Flash Point 182.8ºC

 Names

Name 4-chloro-5-ethoxy-2-phenylpyridazin-3-one
Synonym More Synonyms

 Chemical & Physical Properties

Density 1.22g/cm3
Boiling Point 378.6ºC at 760 mmHg
Molecular Formula C12H11ClN2O2
Molecular Weight 250.68100
Flash Point 182.8ºC
Exact Mass 250.05100
PSA 44.12000
LogP 2.28460
Index of Refraction 1.595
InChIKey WVTBPXHUBFHCQN-UHFFFAOYSA-N
SMILES CCOc1cnn(-c2ccccc2)c(=O)c1Cl

 Safety Information

HS Code 2933990090

 Synthetic Route

~95%

4-Chloro-5-ethoxy-2-phenyl-3(2H)-pyridazinone Structure

4-Chloro-5-etho...

CAS#:5509-73-9

Learn More
Literature: Suree, Nuttee; Yi, Sung Wook; Thieu, William; Marohn, Melanie; Damoiseaux, Robert; Chan, Albert; Jung, Michael E.; Clubb, Robert T. Bioorganic and Medicinal Chemistry, 2009 , vol. 17, # 20 p. 7174 - 7185

~96%

4-Chloro-5-ethoxy-2-phenyl-3(2H)-pyridazinone Structure

4-Chloro-5-etho...

CAS#:5509-73-9

Learn More
Literature: Lyga, John W. Journal of Heterocyclic Chemistry, 1988 , vol. 25, p. 1757 - 1760

~35%

4-Chloro-5-ethoxy-2-phenyl-3(2H)-pyridazinone Structure

4-Chloro-5-etho...

CAS#:5509-73-9

Learn More
Literature: Lyga, John W. Journal of Heterocyclic Chemistry, 1988 , vol. 25, p. 1757 - 1760

 Customs

HS Code 2933990090
Summary 2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

 Bioassay

View more

Name: Primary cell-based high-throughput screening assay for identification of compounds th...
Source: Johns Hopkins Ion Channel Center
Target: regulator of G-protein signaling 4 isoform 2 [Homo sapiens]
External Id: JHICC_RGS_Act_HTS
Name: Luminescence-based cell-based primary high throughput screening assay to identify ago...
Source: The Scripps Research Institute Molecular Screening Center
Target: mu-type opioid receptor isoform MOR-1 [Homo sapiens]
External Id: OPRM1-OPRD1_AG_LUMI_1536_1X%ACT PRUN
Name: QFRET-based biochemical primary high throughput screening assay to identify exosite i...
Source: The Scripps Research Institute Molecular Screening Center
Target: disintegrin and metalloproteinase domain-containing protein 17 preproprotein [Homo sapiens]
External Id: ADAM17_INH_QFRET_1536_1X%INH PRUN
Name: Fluorescence-based cell-based primary high throughput screening assay to identify ago...
Source: The Scripps Research Institute Molecular Screening Center
Target: muscarinic acetylcholine receptor M1 [Homo sapiens]
External Id: CHRM1_AG_FLUO8_1536_1X%ACT PRUN
Name: uHTS identification of small molecule activators of the adaptive arm of the Unfolded ...
Source: Burnham Center for Chemical Genomics
Target: N/A
External Id: BCCG-A405-UPR-XBP1-PrimaryAgonist-Assay
Name: Fluorescence polarization to screen for inhibitor that competite the binding of FadD2...
Source: Broad Institute
Target: FATTY-ACID-CoA LIGASE FADD28 (FATTY-ACID-CoA SYNTHETASE)
External Id: 2147-01_Inhibitor_SinglePoint_HTS_Activity
Name: Bursicon-induced LGR2 mediated cAMP production in LGR-2/CRE6x-Luciferase co-transfect...
Source: Broad Institute
Target: N/A
External Id: Bursicon-induced LGR2 mediated cAMP production in LGR-2/CRE6x-Luciferase co-transfected HEK293 cells Inhibition - 7011-01_Antagonist_SinglePoint_HTS_Activity
Name: Dicer-mediated maturation of pre-microRNA
Source: Center for Chemical Genomics, University of Michigan
Target: N/A
External Id: TargetID_659_CEMA
Name: Fluorescence-based cell-based primary high throughput screening assay to identify pos...
Source: The Scripps Research Institute Molecular Screening Center
Target: muscarinic acetylcholine receptor M1 [Homo sapiens]
External Id: CHRM1_PAM_FLUO8_1536_1X%ACT PRUN
Name: Fluorescence polarization-based biochemical high throughput primary assay to identify...
Source: The Scripps Research Institute Molecular Screening Center
Target: RecName: Full=Sialate O-acetylesterase; AltName: Full=H-Lse; AltName: Full=Sialic acid-specific 9-O-acetylesterase; Flags: Precursor [Homo sapiens]
External Id: SIAE_INH_FP_1536_1X%INH PRUN
Total 119, Current Page 1 of 12
1
2
3
4
5

 Synonyms

pyridazinone,2-35
4-chloro-5-ethoxy-2-phenyl-2H-pyridazin-3-one
4-Chlor-5-ethoxy-2-phenyl-3-oxo-2,3-dihydro-pyridazin
The content on this webpage is sourced from various professional data sources. If you have any questions or concerns regarding the content, please feel free to contact service1@chemsrc.com.